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Configuring Revertive Mode
By default, APS is nonrevertive, which means that if the protect circuit becomes active, traffic is not switched back to the working circuit unless the protect circuit fails or you manually configure a switch to the working circuit. In revertive mode, traffic is automatically switched back to the working circuit.
You should configure the ADM and routers consistently with regard to revertive or nonrevertive mode.
To configure APS in revertive mode:
- In configuration mode, go to the [edit interfaces interface-name sonet-options aps] hierarchy level.[edit]user@host# edit interfaces interface-name sonet-options aps
- Configure revertive mode by setting the revert-time option in seconds which specifies the amount of time to wait after
the working circuit has again become functional before making the
working circuit active again.[edit interfaces so-fpc/pic/port sonet-options aps]user@host# set revert-time seconds
To configure APS in nonrevertive mode:
- In configuration mode, go to the [edit interfaces interface-name sonet-options aps] hierarchy level.[edit]user@host# edit interfaces interface-name sonet-options aps
- Configure the nonrevertive mode by setting the request working option to switch the circuit manually to being the working
circuit or to override the revert timer. This is configured with the revert-time option.[edit interfaces so-fpc/pic/port sonet-options aps]user@host# set request working
 | Note: If you are using nonrevertive APS, you can use the request working statement to switch the circuit manually to being the working circuit or to override the revert timer (configured with the revert-time statement). |
